Researchers at Ulsan National Institute of Science and Technology (Unist; Ulsan, South Korea) have found a simple, low-cost, and eco-friendly method of creating nitrogen-doped graphene nanoplatelets (NGnP), the institute announced. The NGnPs could be used in dye-sensitized solar cells and fuel cells, potentially replacing conventional platinum (Pt)-based catalysts for energy conversion, Unist says. Pt-based electrodes are expensive and susceptible to environmental damage. "Nitrogen is the most abundant constituent in air, and it is inert diatomic gas, while...